Air Quality in Haarlem, Netherlands

Drizzle
7.7°C · 93.7% humidity
7.7°
Feels 0.2°
79
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
74 6pm
68
83
26 9pm
26
39
39 12am
39
39
39 3am
39
39
39 6am
39
39
39 9am
39
39
39 12pm
51
51
51 3pm
64
64
Station readings
74
68
83
CAMS model adj +14
75
50
25
12
12
25
25
25
25
25
25
25
25
25
25
25
25
25
25
37
37
37
50
50
AD 728×90

PM2.5 Trend (24h)

26h · 8 stations
93.7%
Humidity
109.5 km/h
Wind E
1013.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Temperature & Precipitation

PM2.525.64 µg/m³ ×1.7 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
25.64
Median
26.3
Average
16.2
Low
37.7
High
PM2.5 µg/m³ · Model: 29.15 · Bias: +3.5
04-09
10.1° 8.0°
16.44 mm
04-10
10.0° 5.2°
4.81 mm
04-11
9.0° 8.0°
3.56 mm
04-12
7.8° 7.3°
0.31 mm
04-13
9.7° 7.0°
1.13 mm
04-14
10.3° 6.2°
04-15
10.8° 6.4°

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T21:22 UTC.